Does oxygen play a role?
The general working principal is related to the changes in electrical properties due to the absorption of H2 gas into the surface. There are many types of semiconductor based gas sensors, I think the following article may help you:
https://www.google.com.tr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CC4QFjAA&url=http%3A%2F%2Fwww.mdpi.com%2F1424-8220%2F12%2F5%2F5517%2Fpdf&ei=sfj4UcbKIY7sO5q7gNAP&usg=AFQjCNGmbSTnWBI8cK6Ntjlj6clHebILLg&sig2=gFunmwysKQIYZB4TGTI4hg&bvm=bv.49967636,d.ZWU
Also the following sources are worth reading:
http://eprints.unife.it/59/1/Tesi_Delia_Puzzovio.pdf
http://myweb.polyu.edu.hk/~mmsqshi/mydrive/1D%20sensors.pdf
Thanks sir.....
Sir can u tell me if we attached these particles (NiO or CuO) on MWCNTs, whats is the exact ,mechanism for H2 sensor at room temperature?
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